Hmmm solid question…I think I preheated my mini oven to 400…cut the top and bottom off the potato so I could slice down without it rolling. Cut into 1/4-1/2 inch pieces. Sprayed with olive oil and dusted simply with salt and pepper (usually I dust with salt and cinnamon for sweet potato, but I just stuck with s&p here. Turned over 20min in. Took them out as they looked done since my cutting was a little erratic…maybe about 35min for the thick ones?